Envelop-machine.



F. L. SCHMIDT.

ENVELOP MACHINE. APPLICATION FILED FEB.4.1909.

l 1 9 l ,3Q8. Patented July 18, 1916.

2 SHEETSSHEET 1- WITNESSES: v v INVENTOR WO/OYQYQW BY P ATTORNEY F.L.SCHMID1 ENVELOP MACHINE.

APPHCATION FHED FEB.4,I90&

1 91,348. Patent-ed July 18, 1916.

2 SHEETS-SHEET 2.

INVENTOR WO GM BY J v 7 ATTORNEY an the patent to lllhli' lli FERDINAND L. SCHMIDT, 0F

Fri.

NEW YORK, Y., ASSIGNOR cl nic.

TO UNITED STATES ENVELOPE COMPANY, OF SPRINGFIELD, MASSACHUSETTS, A CORPORATION 015 MAINE.

Specification of Letters Patent.

ENVELOP-MACHINE.

la tented July 118, 1%6.

Application filed February 4, 1909. se:cia1no.e75,se5, I

I To all whom it may concern:

- 5011mm, a citizen of the United States,

, My invention. relates to an iinprovemmit,

in machines for making What is known as open window or transparent envolops, that is envelops having an opening in the portion oithe envelop occupied. by the address, this opening being covered by a transparent sheet of paper so thatthe inclosnre in the envelop will disclose the ihlresssnitahly written upon it through this transparent covering.

.T he object of my present invention is to provide an envelop machine with means for punching out the opening in the envelop blank which is. to he covered by the transparent paper. lleretotore this openinc has been punched out on a (lie press, which has been an expensive operation hot by my inrention the additional expense of ninching out the opening in the envelop blank to he covered by the transparent strip of pztper is eliminnteil and the expense of making transparent envelops reduced. I

My present invention is applicable to any known type of envelop machine proviclctl with gumming and folding mechanisms and reciprocating means for transferring the envelop blank from the ginnining 1ncchanisin to the folding mechanism,preferably such as "is shown in the patent to A. it. llhcntan No. l,-l-3i, April 16, 1889. 1 also propose to employ means for covering: the. opening formed in. the envelop hlnnlchy a. patch of transparent paper by any suitable mechanism, preferably-by such as IS shown 1,108,734; August 25, 1914-. I

Referring to the accompanying drawings wherein it have illustrated a orefei'red embodiment of my invention sn nciently to plain the principles and. mode of operation thereof, and applieci to on envelop machine, acting in cooperation with a mechanism for applying atransparent strip of paper to the opening in the blank made by means of my invention, Figure l is plan view of the machine. Fig. 2 is a front elevation of the punching mechanism. Fig. 3 is a, side clove is in proper mesh with Joseph l roehlich No.

tion of themachine. Figs. 4, 5 and 6 are enlzn'gerl views of envelop blanks shown in (.ilterent stages-of operation.

l have shown in my drawings only such parts of the envelop machine as are directl concerned in connection with my present invcntion.

The inechanisrnlor gumining, folding and conveying the envelop from the gunnning to the folding inechanlsms with a period of dwell and also the means for applying it transparent strip to the envelop blank prior to thefolcling of the flaps of the envelop, form no part of my present invention. These parts of an envelop machine and the mechanism for operating them will be well understood by those conversant with this,

' class of machines.

In detail 1 and 2 represent the framesof my machine upon Whose upper sides a, table 3'1sn'1onntecl.

4 is a picker a'rch'oi ordinary construction,

is a plunger arch of ordinary construction.

The patch of trin'ispsrent.paper to he cp pliecl to the outlook openingin-an envelop blank is cut from a roll of paper 7 byn1echnnism snpgi orteci in frames 6 and is attached hy swinging conveyor arms S'upon the en velop blank held under the plunger plate This cutting and at; ching mechanism. is

shown and clescriherl in an application of Joseph Froehlich, Serial No. 473,621, filed January 22, 1909, to which application refer once may he made for a. more detailed description. This cutting and attaching mech cnism is driven by means of a sprocket chain 12 from the cam shaft 9.

26 is having on its left hancl cool a i l0 and also the eccentrics 23. Gear 10 gear 11 situated on can] shaft 3'.

13 is o driving pulley situated on one entl of the cam shaft 9. i

The eccentrics 9.3 are connected by means of the connecting rozlsill to a cross arm 27 which has a, punch 20 secured to its underside.

30 is n. stationary die with an opening suitable for receiving the punch 20v and also answers by means of the grooves 80 as a guide to the conveyor bars 24 which are for the purpose of conveying the envelop hlenks from station A to station B and also from station B to station C. These conveyor bars 24 are reciprocated beck and forth by a.

no I

i from station 'li'to station (1. 1 During the punching operation just menmechanism similar to that used in, the ordinary reciprocating envelop machines and articularly described in the patent to heutan above referred to.

5 18 is a. stripper plate secured to the die 30,

with spacing blocks 31 suitably placed so as to leave an opening 28 between its under side and the top of the die 30 for the purpose of-permitting the envelop. blank to pass between them.

dicated as station A of the machine (see Fig. l). The pickers-) are now raised back to their normal position as indicated in Fig. 3. In the meantime the conveyer bars 24 have passed underneath them and the blank 14:. The blank 14 is now stripped off the pickers 29' by a suitable plate (not shown) and deposited on the upper sides of the conveyor bars .24. The blank 14- is now transported from station A to station B.

The punch 20 being operated upon by the cross arm 2'? connecting rods 21 and eccentrics 23 descends through a suitable opening ;in the stripper-plate 18 and somewhat below theupper side of the die 30, thus punching the opening 16 through the envelop blank 14- The cross arm 27 and the punch 20 now return to their normal position as indicated in Fig. 2. The envelop blank 14. is now transported by the conveyor bars 24:

tioned a 'strip (if-transparent paper is sev ered from the-roll 7 and conveyer by the eonveyer arms 8 -t0 the underside of the plunger 22 which is now ready to descend on the envelop blank 14 and deposit the severed strip oftransparent'paper 17 on said blank so as to cover the opening punched but. The envelop blank 14 is now folded, dried and countedin the usual manner. i

What I claim my invention and desire to secure by Letters Patent is: 1. The combination with an envelop machine of the kind specified, comprising instrun'ientalitics for gumming and folding an envelop blank and transferring the blank from the 'gumming mechanism to the folding mechanism, of means for forming an opening in the envelop blank between the gumming and the folding mechanisms.

2. The combination with an envelop inachine of the kind specified, comprising in- I strumcntalities for gumming and folding an envelop blank and transferring the blank from the gumming mechanism 'to the folding mechanism with a period of dwell, of means for forming an opening in the envelop blank during its period of dwell.

3. The coi'nbination with an envelop machine of the kind specified comprising instrumentalities for gumming and folding an envelop blank and transferring the blank from the gumming to the folding mechanism, of means for forming an opening in the envelop blank between the gumming mechanism and the foldingmechanism, consisting-of a die, a,stripper plate and a reciprocating punch, and means for-reciprocating said hunch.

FERDINAND L. SCHMIDT. 

